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ram advice please


Surviv0r

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bought a very highend pc 6mths ago. the only thing i didnt really check much was the ram, it came with a strange amount of 12gb (8+4). recently noticed the dodgy gits slipped in ram with only 1ghz speed. going to get 16gb of corsair vengeance 2.4ghz...... now it it better to remove the other ram and just have the 16gb as they will be the same, or have all 4 in there even though it will be 2x 1ghz  and 2x 2.4ghz. advice appreciated its ddr4 if that makes a diff

 

ram in pc spec is :-

Memory slots
    Total memory slots    4
    Used memory slots    2
    Free memory slots    2
Memory
    Type    Unknown
    Size    12288 MBytes
    Channels #    Dual
    DRAM Frequency    1063.3 MHz
    CAS# Latency (CL)    15 clocks
    RAS# to CAS# Delay (tRCD)    15 clocks
    RAS# Precharge (tRP)    15 clocks
    Cycle Time (tRAS)    36 clocks
    Command Rate (CR)    2T

 

Ram im thinking of getting spec:-

Technical specifications for CORSAIR Vengeance LPX DDR4 PC Memory - 16 GB DIMM RAM, 2-Module Kit

OVERVIEW
Upgrade type Generic
Module type DIMM
Memory type DDR4
Memory 16 GB (8 GB + 8 GB)
Clock frequency 2400 MHz
FEATURES
Voltage 1.2 V
Pinouts 288 pins
CAS latency C14
Other features - Pure aluminum heatspreader
- 8-layer PCB
- Superior overclocking headroom
GENERAL
System requirements Optimized & compatibility tested for Intel X99 & 100 Series motherboards
Dimensions 135 x 7 x 33.5 mm (H x W x D)
Weight 75 g
Manufacturer’s guarantee Limited lifetime
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Guest BubbaCrawfish

If you have 2 different speed/speced RAM types, the slowest will usually set the speed for the other.

You'd be advised to buy as much RAM as possible for you motherboard in one lot.

 

I recently bought 8 gigs for a board I had on the misinformation that my board only supported 8, when it could've held 16... I so should've bought the 16.

 

Would help out if you threw up the Motherboard model number, if you know what it is.

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Guest BubbaCrawfish
27 minutes ago, Surviv0r said:

the top one is what i have in pc the bottom of is what im thinking of getting

Run HWInfo ( https://www.hwinfo.com/ ) on your PC, and show what the model of the motherboard is, then I'll let you know what the max is and what speeds it can handle.

 

 

This will also give you more detailed info about what RAM is currently in the PC.

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Computer                                                                        
Computer Brand Name:                                                            Acer Predator G6-710

Motherboard                                                                     
Motherboard Model:                                                              Acer Predator G6-710
Motherboard Chipset:                                                            Intel Z170 (Skylake PCH-H)
Motherboard Slots:                                                              3xPCI Express x1, 1xPCI Express x4, 1xPCI Express x16
PCI Express Version Supported:                                                  v3.0
USB Version Supported:                                                          v3.0

BIOS                                                                            
BIOS Manufacturer:                                                              American Megatrends Inc.
BIOS Date:                                                                      09/21/2015
BIOS Version:                                                                   R01-A1
UEFI BIOS:                                                                      Capable

Super-IO/LPC Chip:                                                              ITE IT8732


Ram 1 =

General Module Information                                                      
Module Number:                                                                  1
Module Size:                                                                    4 GBytes
Memory Type:                                                                    DDR4 SDRAM
Module Type:                                                                    Unbuffered DIMM (UDIMM)
Memory Speed:                                                                   1066.1 MHz (DDR4-2132 / PC4-17000)
Module Manufacturer:                                                            SK Hynix
Module Part Number:                                                             HMA451U6AFR8N-TF
Module Revision:                                                                0.0
Module Serial Number:                                                           2603825489
Module Manufacturing Date:                                                      Year: 2015, Week: 46
Module Manufacturing Location:                                                  1
SDRAM Manufacturer:                                                             SK Hynix

Module Characteristics                                                          
Row Address Bits:                                                               15
Column Address Bits:                                                            10
Module Density:                                                                 4096 Mb
Number Of Ranks:                                                                1
Device Width:                                                                   8 bits
Bus Width:                                                                      64 bits
Die Count:                                                                      1
Module Nominal Voltage (VDD):                                                   1.2 V
Minimum SDRAM Cycle Time (tCKAVGmin):                                           0.93800 ns
Maximum SDRAM Cycle Time (tCKAVGmax):                                           1.50000 ns
CAS# Latencies Supported:                                                       9, 11, 12, 13, 14, 15, 16
Minimum CAS# Latency Time (tAAmin):                                             13.500 ns
Minimum RAS# to CAS# Delay (tRCDmin):                                           13.500 ns
Minimum Row Precharge Time (tRPmin):                                            13.500 ns
Minimum Active to Precharge Time (tRASmin):                                     33.000 ns

Supported Module Timing at 1066.1 MHz:                                          15-15-15-36
Supported Module Timing at 1000.0 MHz:                                          14-14-14-33
Supported Module Timing at 933.3 MHz:                                           13-13-13-31
Supported Module Timing at 866.7 MHz:                                           12-12-12-29
Supported Module Timing at 800.0 MHz:                                           11-11-11-27
Supported Module Timing at 666.7 MHz:                                           9-9-9-22
Supported Module Timing at 600.0 MHz:                                           9-9-9-20

Minimum Active to Active/Refresh Time (tRCmin):                                 46.500 ns
Minimum Refresh Recovery Time Delay (tRFC1min):                                 260.000 ns
Minimum Refresh Recovery Time Delay (tRFC2min):                                 160.000 ns
Minimum Refresh Recovery Time Delay (tRFC4min):                                 110.000 ns
Minimum Four Activate Window Delay Time (tFAWmin):                              21.000 ns
Minimum Active to Active Delay Time - Different Bank Group (tRRD_Smin):         3.700 ns
Minimum Active to Active Delay Time - Same Bank Group (tRRD_Lmin):              5.300 ns
Minimum CAS to CAS Delay Time - Same Bank Group (tCCD_Lmin):                    5.628 ns

Features                                                                        
Module Temperature Sensor (TSOD):                                               Not Supported
Temperature Sensor Location:                                                    Front Side
Module Nominal Height:                                                          31 - 32 mm
Module Maximum Thickness (Front):                                               1 - 2 mm
Module Maximum Thickness (Back):                                                <= 1 mm
Address Mapping from Edge Connector to DRAM:                                    Standard


Ram 2=

General Module Information                                                      
Module Number:                                                                  3
Module Size:                                                                    8 GBytes
Memory Type:                                                                    DDR4 SDRAM
Module Type:                                                                    Unbuffered DIMM (UDIMM)
Memory Speed:                                                                   1066.1 MHz (DDR4-2132 / PC4-17000)
Module Manufacturer:                                                            SK Hynix
Module Part Number:                                                             HMA41GU6AFR8N-TF
Module Revision:                                                                0.0
Module Serial Number:                                                           3584692337
Module Manufacturing Date:                                                      Year: 2015, Week: 38
Module Manufacturing Location:                                                  1
SDRAM Manufacturer:                                                             SK Hynix

Module Characteristics                                                          
Row Address Bits:                                                               15
Column Address Bits:                                                            10
Module Density:                                                                 4096 Mb
Number Of Ranks:                                                                2
Device Width:                                                                   8 bits
Bus Width:                                                                      64 bits
Die Count:                                                                      1
Module Nominal Voltage (VDD):                                                   1.2 V
Minimum SDRAM Cycle Time (tCKAVGmin):                                           0.93800 ns
Maximum SDRAM Cycle Time (tCKAVGmax):                                           1.50000 ns
CAS# Latencies Supported:                                                       9, 11, 12, 13, 14, 15, 16
Minimum CAS# Latency Time (tAAmin):                                             13.500 ns
Minimum RAS# to CAS# Delay (tRCDmin):                                           13.500 ns
Minimum Row Precharge Time (tRPmin):                                            13.500 ns
Minimum Active to Precharge Time (tRASmin):                                     33.000 ns

Supported Module Timing at 1066.1 MHz:                                          15-15-15-36
Supported Module Timing at 1000.0 MHz:                                          14-14-14-33
Supported Module Timing at 933.3 MHz:                                           13-13-13-31
Supported Module Timing at 866.7 MHz:                                           12-12-12-29
Supported Module Timing at 800.0 MHz:                                           11-11-11-27
Supported Module Timing at 666.7 MHz:                                           9-9-9-22
Supported Module Timing at 600.0 MHz:                                           9-9-9-20

Minimum Active to Active/Refresh Time (tRCmin):                                 46.500 ns
Minimum Refresh Recovery Time Delay (tRFC1min):                                 260.000 ns
Minimum Refresh Recovery Time Delay (tRFC2min):                                 160.000 ns
Minimum Refresh Recovery Time Delay (tRFC4min):                                 110.000 ns
Minimum Four Activate Window Delay Time (tFAWmin):                              21.000 ns
Minimum Active to Active Delay Time - Different Bank Group (tRRD_Smin):         3.700 ns
Minimum Active to Active Delay Time - Same Bank Group (tRRD_Lmin):              5.300 ns
Minimum CAS to CAS Delay Time - Same Bank Group (tCCD_Lmin):                    5.628 ns

Features                                                                        
Module Temperature Sensor (TSOD):                                               Not Supported
Temperature Sensor Location:                                                    Front Side
Module Nominal Height:                                                          31 - 32 mm
Module Maximum Thickness (Front):                                               1 - 2 mm
Module Maximum Thickness (Back):                                                1 - 2 mm
Address Mapping from Edge Connector to DRAM:                                    Mirrored

hwid.jpg

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Guest BubbaCrawfish

Being that it is so new, and that it's a pre-built machine you should check with Acer as to what techs can service it for you. It does seem odd that the ram is appearing so slow, but I haven't had experience with DDR4 yet.

 

With regards to it, it's because the warranty is still valid, and you should treasure that until it's out of warranty. It will help out if anything, and I mean anything, goes wrong. (2 years is a good amount of time)


Just reading on it though too, labor isn't covered for "free", but really, slapping in a couple more sticks of RAM isn't that time consuming, so it could be an idea to give acer a call, and ask them directly what the memory speed specs should be, and whether there's another service tech in your area that could do the work if you don't trust the original guys.

Hell, it's a nice looking rig, and I'd probably grab one if I had the cash.

I have found dealing with phone support is trivial at times, but if you work your way through the helpdesk to the techs, they can usually help out a lot when needed. ;)

If you also let the tech know that you have a HWInfo printout ready, they may have a look on that too if you chuck it to them.

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thanks for advice m8, should i remove old ram when get the new ones? as been told its better to have the same type/speed ram in as will perform better. the dodgy gits put cheap ram in and has always been that slow. i used speccy before but hwinfo looks better. its a make i have never heard of on the ram. yeah its a lovely setup especially now thrown in a 1080, it came with a 970

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30 minutes ago, seXikanac said:

RAM is not slow, it just say native speed and DDR means double data rate, si it's 2100 RAM in his case. Corsair one is 2400 but it will work on 2100 as well. To be honest, it's not important is it 2100 or 2400, it's less than 1% of real life difference. But amount is what is important. If you can, sell that 8+4 and purchase 2 more of same Corsair modules. Since you purchased that pricey PC, I presume it's not issue for you to get all 4 of same high speed modules

but then surely if i removed the the old ram the the 2.4 would run at double too

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4gig

Module Number:                                                                  1
Module Size:                                                                    4 GBytes
Memory Type:                                                                    DDR4 SDRAM
Module Type:                                                                    Unbuffered DIMM (UDIMM)
Memory Speed:                                                                   1066.1 MHz (DDR4-2132 / PC4-17000)
Module Manufacturer:                                                            SK Hynix
Module Part Number:                                                             HMA451U6AFR8N-TF
Module Revision:                                                                0.0
Module Serial Number:                                                           2603825489
Module Manufacturing Date:                                                      Year: 2015, Week: 46
Module Manufacturing Location:                                                  1
SDRAM Manufacturer:                                                             SK Hynix
 

 

8gig

 

Module Number:                                                                  3
Module Size:                                                                    8 GBytes
Memory Type:                                                                    DDR4 SDRAM
Module Type:                                                                    Unbuffered DIMM (UDIMM)
Memory Speed:                                                                   1066.1 MHz (DDR4-2132 / PC4-17000)
Module Manufacturer:                                                            SK Hynix
Module Part Number:                                                             HMA41GU6AFR8N-TF
Module Revision:                                                                0.0
Module Serial Number:                                                           3584692337
Module Manufacturing Date:                                                      Year: 2015, Week: 38
Module Manufacturing Location:                                                  1
SDRAM Manufacturer:                                                             SK Hynix
 

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